What can I encode in a QR code?

QR codes can encode URLs, plain text, email addresses, phone numbers, SMS messages, Wi-Fi credentials, geographic coordinates, and vCard contacts. Maximum capacity is about 4,296 alphanumeric characters.

What error correction level should I choose?

Low (7% damage tolerance) for digital use. Medium (15%) for most print uses. Quartile (25%) for textured surfaces or logo overlays. High (30%) for harsh environments or large logo overlays.

How large should my QR code be for print?

Minimum 2x2 cm for business cards. 5-10 cm for posters. At least 10 cm for large format print. Generate at 400-500px for best print quality and scale in your design software.

QR Code Generator | Temporary Email Address generator edu email 2026

What is a QR Code Generator?

A QR code (Quick Response code) is a two-dimensional barcode that encodes text — typically a URL — which smartphones can scan instantly with their cameras. QR codes were invented in 1994 for the Japanese automotive industry but have become ubiquitous in marketing, payments, contactless menus, event tickets, business cards, and product packaging worldwide, especially since the COVID-19 pandemic accelerated their mainstream adoption.

Our QR code generator converts any URL, plain text, email address, phone number, or Wi-Fi credentials into a scannable QR code in seconds. You can customise the size and error correction level, then download the code as a PNG image ready for print or digital use. Error correction determines how much of the QR code can be obscured or damaged while still remaining scannable — useful when placing QR codes on textured surfaces or with logo overlays.

How to Use the QR Code Generator

Enter your URL, text, email, or phone number into the Content field.
Choose the Size (200–500px) and Error Correction level (Low/Medium/Quartile/High).
Click Generate.
Click Download PNG to save the QR code image for use in print or digital media.

Why Use Our QR Code Generator?

100% Free — Generate unlimited QR codes at no cost.
No Registration — No sign-up, no watermark on downloaded codes.
Browser-Based — Generated using QRCode.js client-side; no server involved.
Configurable Size — Choose 200, 300, 400, or 500px for different use cases.
Error Correction — Four levels from Low (7%) to High (30%) for damaged/overlaid codes.

Frequently Asked Questions

QR codes can encode almost any text: URLs (https://...), plain text messages, email addresses (mailto:), phone numbers (tel:), SMS messages (smsto:), Wi-Fi credentials (WIFI:S:NetworkName;T:WPA;P:password;;), geographic coordinates, and vCard contact information. The maximum capacity is about 4,296 alphanumeric characters.

Low (L) — 7% of the code can be damaged. Use for clean digital contexts. Medium (M) — 15% damage tolerance. Good default for most uses. Quartile (Q) — 25% tolerance. Use when the QR code will be on textured surfaces or with a small logo overlay. High (H) — 30% tolerance. Best for harsh environments or codes with large logo overlays — but produces denser, smaller modules that may be harder to scan from a distance.

The minimum recommended size for print is 2 cm × 2 cm (about 0.8 inches square) — smaller codes may not scan reliably. For business cards, 2–3 cm is standard. For posters, 5–10 cm allows scanning from a distance. For billboards or large format, aim for at least 10 cm. Generate at 400–500px for best print quality and scale in your design software.

Static QR codes (like those generated here) encode the URL or text directly — they cannot be edited after creation. If you change the destination URL, you must generate a new QR code. Dynamic QR codes (offered by paid services) use a short redirect URL that can be changed without regenerating the code — useful for marketing campaigns where the destination may change.

Quick Facts

✓ 100% free, no hidden fees
✓ No account or login needed
✓ Works in any browser
✓ Your data never leaves your device
✓ No watermark on downloaded QR codes

QR Code Generator